nix-darwin: make several changes to home and system configuration specific to darwin platform

flake.nix

@@ -81,7 +81,10 @@
 
       darwinConfigurations = {
         franks-macbook-pro = nix-darwin.lib.darwinSystem {
-          specialArgs = { inherit inputs; };
+          specialArgs = {
+            inherit inputs;
+            inherit self;
+          };
 
           modules = [
             home-manager.darwinModules.home-manager

home/frank.nix

@@ -17,6 +17,30 @@ in
       '';
     };
 
+    # Configure ZSH if using darwin (macOS).
+    zsh =
+      if pkgs.stdenv.hostPlatform.isDarwin then
+        {
+          enable = true;
+
+          initExtra = ''
+            clear;fastfetch
+          '';
+        }
+      else
+        { };
+
+    starship = {
+      enable = true;
+
+      settings = {
+        character = {
+          success_symbol = "[λ](bold green)";
+          error_symbol = "[λ](bold red)";
+        };
+      };
+    };
+
     fastfetch = {
       enable = true;
 
@@ -43,7 +67,7 @@ in
         ];
 
         logo = {
-          source = "nixos2";
+          source = if pkgs.stdenv.hostPlatform.isDarwin then "macos" else "nixos2";
         };
       };
     };

hosts/franks-macbook-pro/configuration.nix

@@ -11,11 +11,17 @@ in
     ../shared/darwin.nix
   ];
 
-  environment.systemPackages = with pkgs; [
-    bash-language-server
-    nil
-    devenv
-  ];
+  environment = {
+    systemPackages = with pkgs; [
+      bash-language-server
+      nil
+      devenv
+    ];
+
+    shellAliases = {
+      "nix-rebuild" = "sudo darwin-rebuild switch --flake /etc/nix-darwin/.#franks-macbook-pro";
+    };
+  };
 
   homebrew.casks = [
     "zed"

hosts/shared/darwin.nix

@@ -23,12 +23,32 @@
       };
     };
 
-    settings.experimental-features = "nix-command flakes";
+    settings = {
+      experimental-features = [
+        "nix-command"
+        "flakes"
+      ];
+
+      use-xdg-base-directories = true;
+    };
   };
 
   # Enables Touch ID for sudo prompts.
   security.pam.services.sudo_local.touchIdAuth = true;
 
+  programs = {
+    zsh = {
+      enable = true;
+      enableCompletion = true;
+      enableAutosuggestions = true;
+      enableSyntaxHighlighting = true;
+
+      interactiveShellInit = ''
+        eval "$(jump shell)"
+      '';
+    };
+  };
+
   environment = {
     variables = rec {
       XDG_CACHE_HOME = "$HOME/.cache";
@@ -43,13 +63,14 @@
       ls = "ls --color=tty";
       ff = "clear;fastfetch";
       nb = "nix-build";
-      nix-rebuild = "sudo darwin-rebuild switch";
     };
 
     systemPackages = with pkgs; [
       wget
       fastfetch
       btop
+      nerd-fonts.hack
+      jump
     ];
   };